Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Property and equipment, net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Property and equipment, net
Property and equipment, gross	$ 5,233		$ 5,233		$ 4,975
Less: Accumulated depreciation and amortization	(3,060)		(3,060)		(2,683)
Property and equipment, net	2,173		2,173		2,292
Depreciation expense	300	$ 600	200	$ 400
Laboratory equipment
Property and equipment, net
Property and equipment, gross	4,529		4,529		4,326
Leasehold improvements
Property and equipment, net
Property and equipment, gross	363		363		300
Computer equipment and software
Property and equipment, net
Property and equipment, gross	176		176		229
Furniture and office equipment
Property and equipment, net
Property and equipment, gross	$ 165		$ 165		$ 120